Can someone help verify the identity sin x sin 2x + cos x cos 2x= cos x?

     
01 - sin2x cos 2x sinxcosX cos 2x sin 2+ (cos X+ sin 2x) 2 sinxcos Xsin 2X cos 2x1 -2 sinx cos*sin 2x cos 2x sin; cos X sin X cosX (cos X+ sin 2x) 2 sinx cosX cos 2x - sin2X (cosx sinx)(cos X sinx)…


Bạn đang xem: Can someone help verify the identity sin x sin 2x + cos x cos 2x= cos x?

*

Best Match Question:

Verify ' the identity:cOs 2x cos X - sin sin 2x cos *+ sinChoose the sequence of . Steps below that verifies the identity:0 cos 2x sin 2x cos sln 1+2 sin x coscos 2x sin 2xcos 2x eln 2x cor 2x - sln ?x 1 +2sinX corxcos sincos sin (cos X+ sln 2x) +2sin* cos X cos > + sinx) cos * sinx) (cos * + sinx)(cos sinx) cos sin cos * + sincos sin " (cos x+ sin Ex) + 2sinxcosX Cor sln x)( cos sin X) cos sinx)cos X - Sin*) cos sin cos sinCo1 (cos x+eln" 2x) +2unxcoex (cosx+axk corz- sn (cosx + elxKcoe% + eh# Co4 Eein xteln


Video Transcript

We're trying to lớn figure out which mode shows the process of verification of the identity. The coastline of two X is the first thing that appears khổng lồ be being changed. We can work with a number of identities. There are two cosine squares of X-1. We have one minus two squared off. We have cosine squared of X và X & X và X & X và X và X and X & X & X và X and X & X & X and X and X & X and X and X và X & X và X và X & X. The first thing to vì when looking at your answer choices is to vày cosine squared plus sine squared. Answer choice C will be the only one that will work for us.


*



Xem thêm: Cửa Hàng Bánh Pía Sóc Trăng Tại Hà Nội, Hải Phòng, Đà Nẵng, Huế

*

Prove the identity:cos(2x) tan(x) sin( 2x} 1 - (1 - 2 sin?(x) cos(2x) sin( 2x) 2 sin(x)2 sin(x) cos x) tan(x)


Prove the identity. Cos(2x) tan(x) sin(2x) (1 2 sin?(x)) cos(2x) sin(2x) 2 sin(x)2 sin(x) cos(x) tan(x)


Verify the identity:sincos x= 2sin X-Which of the following iour statements establishes the identity?sin cos X=sin 2x - sin? x) 2…


Xem thêm: Cách Nấu Xôi Gấc Đơn Giản Tại Nhà, Cách Nấu Xôi Gấc Đơn Giản Mà Ngon

Verify the identity. 2 tan(x) sin(2x) + tan?(x) 2 tan(x) 2 tan(x) 1 + tan?(x) sec2(x)2 sin(x) cos(x)2 sin(x)COS Xsin( 2x)


Want better grades, but can’t afford lớn pay for nangngucnoisoi.vn?

Ask your parent or guardian for help.

Enter your parent or guardian’s e-mail address: